Through the isthmus of central America only, a short, safe, and easy passage from Europe to the eastern parts of Asia and the Pacific Ocean, can be effected. That a passage over the Pole exists, is extremely probable, nay, it may be said, is certain. This passage, when found, will be obtained by standing north between Nova Zembla and Spitzbergen, and thence over the Pole, inclining first eastward above Europe, and thence westward for some distance, to Behring's Straits. But admitting that there is a passage open by this route, it can only be so from the end of May to the middle of September, and during this period only comparatively safe; a period much too short to accomplish a voyage out and back from China, and scarcely sufficient to perform the voyage out and back between Great Britain and her territories on the west coast of America situated to the north of Columbia River. Moreover, even if a passage this way was open for a period sufficient to enable the navigator to accomplish the voyage to either of the quarters alluded to, still it will appear, when the distances come (p. 084) to be noticed and contrasted, that, considering the winds and the weather which ships would encounter in passing over the North Pole into the Pacific, as contrasted with those which they would most certainly meet with in sailing westward through tropical seas, by the Isthmus of America; that the latter route would, upon the whole, be the best, and in all respects preferable and most expeditious.
A communication by the latter quarter may be advantageously and speedily opened up, both for steamers and for sailing vessels; and in the conveyance of mails, both or either may be employed, as shall appear to be most eligible and most advisable. To lay open such a communication as this would prove, is an object of the first importance, worthy of the attention of any body of men, and of any nation, but more especially of a nation like Great Britain, to support and to patronize in every way. By this route, all vessels, mails, and merchandise could reach the more distant and wealthy parts of Asia and Australasia, sooner and safer, and through seas comparatively always tranquil, borne by winds scarcely ever varying, and always favourable, than these can do by any other course that is known, or that remains to be discovered. In an especial manner, this would be the case as regards all the western coasts of America, North and South, the Islands in the Pacific, New South Wales and Van Dieman's Land, Japan, China, Eastern Siberia, &c. The perpetual trade-winds would bear vessels before them from Madeira to Canton, and almost to Sydney, while in returning they would merely have to run through these trade-winds, with a steady breeze on the beam, until they reached the latitude of 30° to 32° north, when the steady and certain, and strong westerly and south-west winds, would bear them in these parallels first, to the west coast of America; from which point winds off the land, and north-easterly trade-winds, would carry them, in the second place, to the point of communication with the Atlantic, through the Isthmus of central America; from which they, in the third place, would run to the north, carried by the trade-winds and the Gulf stream, into and through the Gulf of Florida, into the variable winds, which would quickly bear them to all the eastern ports of North America, and (p. 085) to all the ports in Europe, or along the coasts of the Mediterranean.